Subject

    Quantitative Aptitude

    Topic

    Number

    One number is wrong in the following number series given in each of the following questions. You have to identity that number and assuming that a new series starts with that number following the same logic as in the given series, what will be the third number in the new series? 3  4  10  34  136  685  4116

    ক)
    22
    খ)
    276
    গ)
    72
    ঘ)
    1374
    ঙ)
    12

    Explanation

    The pattern of given series is: → 3, → 4 = (3 + 1) × 1 → 10 = (4 + 1) × 2 → 34 ≠ (10 + 1) × 3 = 33 → 136 = (33 + 1) × 4 → 685 = (136 + 1) × 5 → 4116 = (685 + 1) × 6 ∴ 34 is the wrong number in the series and the correct number will be 33 Based on the above pattern we can create the following series → 34, → 35 = (34 + 1) × 1 → 72 = (35 + 1) × 2 Hence, third number in the new series is 72

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